Window structure



,June 12, 1945.

Z5 ze E. C. SWANSON ET AL WINDOW STRUCTURE Filed May 14, 1942v 3sheets-sheet 2 INYL'NOK E. C. 5 wanson P. C. Gas/(Ell l-/.A .S mothcrmonlJune 12,` 1945.

E. C. SWANSON ETAL WINDOW STRUCTURE Filed May v14, 1942 I s sheets-sheet3 LC. 5 wanson R Gas/(ell HA Smothcrmon Patented June 12, `1945 K EarlC. Swanson, Perry Craig Gaskell, andHarold A. Smothermon, Bayport,Minn., assignors to ,Andersen Corporation, Bayport, Minn., a

poration of Minnesota Application May 14, 1942, Serial No. 442,926

1 claim.

This' invention relates to window structures, particularly ofthe doublehunggtype, and the invention resides specically in means for sealing thewindow against the entrance of air and dust when the sashes are inclosed position.

It is an object of our invention to provide a new type and principle ofweatherstripping for counterbalanced sashes in which thecounterbalancing means serves to maintain the weatherstrip inweather-sealing position.

Ano-ther object 'vof our invention is,v to provide `Still anotherobjectof the invention is to pro-y v vide a weatherstrip so mounted upon asash that vertical force applied to the strip will be trans- (Cl.2li-52.6)

Fig. 5 is a fragmentary vertical sectional vview of the'upper part of aWindow frame and sash showing the application of the invention toaspring counterbalanced sash; f

Fig. 6 is a fragmentary isometric view of a sash and weatherstripshowing the attachment of the latter to the tape. of a Vspringcounterbalance;

Fig. 7 is a view in vertical section ofa double hungwindow showingamodied form of weatherstrip-operating means; f

Fig. 8 is a, fragmentary section view `on an enlarged scale of the'upperpart of the window shown in Fig. 7;'

Fig. 9 is a view similar to Fig. Siy of the lower part of the samewindow; `and Fig. 10 is a view in elevation on a very much v enlargedscale of the connection Vbetween the lated into horizontal force,thereby urging the `ous advantages thereof will be more fully broughtout as the description proceeds.

In the accompanying drawings we have illustrated a practical embodimentof our invention, together with two modifications thereof. But it is tobe understood that the drawings Aare illus-A trative merely and that wedo not confine ourselves to the precise details disclosed. Numerousother modifications will readily occur .to those skilled in the artwhich may readily vbe' made without departing from the spirit of ourinven. tion or the scope thereof as denedin the appended claims.

In the drawings,

Fig. 1 is a view in elevation, from Ithe outside of a building, showinga double hung window embodying our invention;

Fig. 2 is a view in horizontal section .taken on line 2-2 of Fig. 1;

Fig. 3 is a view in vertical section taken on line 3-3 of Fig. 1;

Fig. 4 is a fragmentary isometric view on an enlarged scale showing theweatherstrips and sashes and their relation to the respective vstops onthe frame;

weatherstrip and the sash stile.

So far as appearance is concerned, a double hung window embodying ourinvention will not look materially kdifferent from the ordinary doublehung window. Furthermore, many of the details of construction of theframe itself and of the sashes are standard and well'known.

For example, our window, as seen from the outside of a building (seeFig. 1), appears to bean ordinary double hung window comprising an uppero1' outer sash II and a lower or inner sash I2, and the window openingis surrounded by any suitable form of outside casing membersy I3. Uponthe inside of the building,'the window opening will be surrounded by theusual interior trim pieces I 4.r

The frame of our window comprises the usual head yjamb I5, sill I6, and.side jambs IT. Suit able blind stops I8 are provided which, with theparting stops I9, form the channel in which the outside sash II slides.Inside stops 20 cooperate with the said parting stops I9 to form thechannel in which the inside sash I2 slides.

Beyond'the side jambs I1 are the weight pockets 2| in which movesuitable counterweightsv 22 which are connected. to the sashes in'amanner presently to be described. For purposes of illustration, thecoun-terweights 22 are here yshown to be made of concrete and theirweightA may be 'increased by using iron ore as the aggregate.

However, for the purposes of the presen-t invention, the particularconstruction of the counterweights is not important. y

Our invention resides particularly 'in the weatherstripping of a windowhaving the general features above described. Our new and improvedweatherstrip and the method of operating the same will now bev describedas follows:

Ordinarily, weatherstrips for windows are made of metal, such asaluminum, zinc or bronze. Our weatherstrip indicated by the referencecharacter 23 is made of wood and, preferably, a hard wood such as maple.The weatherstrip 23 has a portion locatedI in a groove 24 in the sashstile and another portion extending beyond and parallel to the sashstile, as more particularly shown in Figs. 2 and 4.

The weatherstrip 23 is movably mounted upon, and with respect to, thesash stile by means of pins 25 which pass through a plurality ofinclined slots 26 in the weatherstrip.

As vmore particularly shown in Fig. 3, the` weatherstrips 23 areconnected to the sash cord 21 by suitable pins 28. These sash cordsextend upwardly and over the usual pulleys 29 to the back of the jainbwhere they are connected to the counterweights 22. In this way theweatherstrips are connected to the counterweights and- Vcounterbalancedtype.

-balanced by means of tapes and springs.

It will be understood, of course, that any suitable and well known formof weatherstripping .may be employed at the check rails of the sashes aswell as at the bottom rail of the inner sash.

In the embodiment of our invention, as thus far described, we have`applied the invention to sasheswhich are oounterbalanced by the usualcounterweights and sash cord. It will be readily understood that ourinvention is equally applicable to the type of window which is counter-For example, in Fig. 5, we have shown the upper part of a double hungwindow of the spring- In this form of the invention, 30 represents thespring housings located above .the head jamb and from them issue tapes3| which will be connected to weatherstrips 32, which are similar to'theweatherstrips 23 heretofore described; which is to say that saidweatherstrips are connected by pins 33 and inclined slots 34 t0 the sashstiles. (See, also, Fig. 6.)

In Figs. 'l to l0, inclusive, we have illustrated `another modificationof our invention. In this since the connection of the weatherstrip tothe sash stile is by means of the inclined slo-ts 25, it follows thatthe vertical lifting force of the counterweights is translated intosubstantially horizontal force. For example, looking at the inner orlower sash I2 in Fig. 3, the action of' the counterweight is t0 lift upthe weatherstrip 23 and because of the inclined slots 26 the saidweatherstrip is urged forwardly into contact with the inside stop 20. Atthe same time there will be an equal and opposite reaction tending tomove the said lower sash I2 outwardly so that the outer surface of itsstiles will be pressed firmly into engagement with the parting stop I9.

Similarly, with respect to the upper or outer sash Il, as shown in Fig.3, the counterweight will lift up the weatherstrip 23 and by reason ofthe inclined slots 2B, the said weatherstrip will be urged outwardlyinto contact with the blind stops I8. At the same time there is an equaland opposite reaction movement of the said upper sash inwardly so as tovpress it firmly into engagement with the parting stops I9.

Inasmuch as our weatherstrips are made of wood, they should preferablybe treated against moisture absorption. It is also desirable in order toinsure smooth and easy operation that the said weatherstrips be waxedand this may also be done with the parting stop I 9 so that the sasheswill slide more easily in contact therewith.

It will be seen, therefore, that the weatherstrip thus far described isa decided departure from the types and principles of weatherstrippingheretofore employed. We have provided a relatively inexpensive but veryefficient type of weatherstripping operating upon an entirely newprinciple. We utilize the counterbalancing equipment for the purpose ofmaintaining the weatherstrip in weather-sealing position. Because of theslot and'pin connection between the weather strip and the sash stile, itwill be understood that the weatherstrip will readily accommodate itselfnotwithstanding any shrinkage or swelling of the respective parts due tonormal atmospheric conditions.

By making our Weatherstrips of wood, we also dispense with the use ofthe critical metals such as aluminum, zinc and bronze, which haveheretofore been used for weatherstrips.

form, generally speaking, we employ 'the same form of wood weatherstrip,as we have heretofore described, and the said wood weatherstrip isconnected to the sash stiles by slot and pin connections. However, inthis embodiment ofl the invention we do not connect the weatherstrips tothe counterbalancing equipment but employ a different means forautomatically moving the weatherstrip into 'weather-sealing positionwhen the sashes are closed.

Thus, in Fig. 7 we have shown in vertical section a double hung windowcomprising a lower sash 35 and an upper sash 36 which are slidable inthe customary channels provided in double hung window constructions. Thesashes are provided with wood weatherstrips 31 which are connected-totheir respective stiles by pins 38 and inclined slots 39. In this formof the invention the sash cords 40 are connected directly to the sashesas at 4i and pass over the customary pulley 42 to the counterweight onthe other side of the jamb.

As more particularly shown in the enlarged detailed view, Fig. 10, weemploy compressed coil springs 44, one on each side of the pin 38, whichtend to keep the weatherstrip 31 normally in iixed position with respectto thesash stile. In its normal fixed position the weatherstrip willprojectI beyond the face of the sash stile and into contact with theadjacent stop; so as to prevent rattling of the sash when it is open.The coiled springs will provide sufficient pressure on the weatherstri'pfor this purpose in the same way as the counterweights do in theembodiment of the invention heretofore described. Such contact betweenthe Weatherstrip and the adjacent stop will not interfere with thesliding of the sashes, which operation is also facilitated by waxing theweatherstrips and the stops.

In the form of our invention illustrated in Figs. 7 to 10, We providemeans for automatically moving the weatherstrip into weather-sealingposition when the sashes are closed. This means comprises pressureblocks 45 secured in theupper and lower cornersof the frame in suchposition that they will engage the weatherstrips 3l -when the sashes aremoved into closed position and thus impart vertical movement to saidscribed, the weatherstrip on the lower sash will be urged forwardly intocontact with the inner stop and the weatherstrip 31 of the upper sash ywill -be urged outwardly into contact with the blind stop. At the sametime, and in the same manner heretofore described, the sashes will bemoved by the opposite and equal reaction into contact with theirrespectively adjacent sides of the central parting stop.

In the form of the invention as illustrated'in Figs. 7 to 10, inclusive,the weatherstrips are shown and described as being mounted upon the sashstiles and the pressure blocks for operating the Weatherstrips aremounted upon the frame. However, to those skilled in the art, it will bereadily apparent that in this form of the invention the weatherstripsmay equally well be mounted upon the frame and the pressure blocks uponthe sashes. This, of course, would be an obvious reversal of thearrangement herein illustrated and described and We contemplate. thatsuch reverse arrangement may be used if desired.

In connection with the embodiments of the invention illustrated in Figs.1 to 6, inclusive, in which the counterbalancing means serves to holdthe Weatherstrip in operative position, it may be desirable to assureeven firmer contact between the weatherstrips and their adjacent stopswhen .the sashes are in closed position. To this end we may providepressure blocks similar to the blocks 45 heretofore described which willoperate to bring t-he weatherstrips tightly into engagement with theirstops, thus supplementing the pressure or force of the counterbalancingmeans.

From the foregoing description, those skilled in the art will readilyunderstand the construction and operation of our invention. It Will :beappreciated that We have provided an entirely new form of weatherstripconsisting of a Wooden member movably mounted upon a sash stile and soarranged that when the sash is closed the said movable member will be inweather-sealing position. This is accomplished in one form of ourinvention by connecting the movable weatherstrip to the counterbalancingequipment, and in another form of our invention by the use of suitablepressure blocks which move the weatherstrip when the sash is closed. Asabove described, the

" pressure blocks may also be used in connection with the embodiment ofthe invention in which the counterbalancing means serves to move andhold the weatherstrip in sealing position. By our arrangement, We haveeliminated to a-large extent 'the use of metal in Weatherstrippingwindows. We have provided a weatherstrip of cheaper material and yet, byour arrangement we have provided a very eicient structure.

We claim as our invention:

A double hung window stru-cture comprising a frame having side jambs,inside stops and blind stops, a parting stop on said jambs forming withsaid aforementioned stops a pair of channels, a pair of saslies slidablymounted insaid channels, said sashes having stiles provided withlongitudinally extending grooves in their edges, weatherstrips vmountedin said grooves and having portions extending along the edges of saidstiles and towards their respectively adjacent stops, the mounting forsaid weatherstrips comprising pins on said sashstiles andinclined slotsin said weatherstrips, the slots in the weatherstrip ony one sash beingoppositely inclined with respect to the slots in the weatherstrip on theother sash, and counterbalancing means for said sashes connected to saidweatherstrips, said counterbalancing means acting on said weatherstripsand said'sashes to move said weatherstrips in opposite directions intocontact with their respectively adjacent stops and simultaneously tomove saidA sashes in opposite directions into contact with the oppositefaces of said parting stop.

EARL C. SWANSON.

PERRY CRAIG GASKELL.

HAROLD A. SMOTHERMON.

